Using the graph of below, answer the following questions.

a) Where is   ?    (Enter an interval)

b) Where is   ?    (Enter an interval)

c) Where is   ?    (Enter a list of values, separated by commas)

d) Where is   ?    (Enter an interval)

e) Where is   ?    (Enter an interval)

f) Where is   ?    (Enter a list of values, separated by commas)

NOTE: When using interval notation in WeBWorK, remember that:
        You use 'INF' for and '-INF' for .
        And use 'U' for the union symbol.

You can earn partial credit on this problem.